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Secretary of State John Kerry said the US had no intelligence on who was behind the shooting of Russian opposition politician Boris Nemtsov.

US Secretary of State John Kerry. Credit: REUTERS/Gary Cameron

"The bottom line is we hope there will be a thorough, transparent, real investigation, not just of who actually fired the shots, but who, if anyone, may have ordered or instructed this or been behind this," he told ABC News' This Week.

Airstrikes alone won’t defeat this enemy. A much fuller response is demanded from the world. We need to support Iraqi forces and the moderate Syrian opposition, who are facing ISIS on the front lines ...
In this battle, there is a role for almost every country. Some will provide military assistance, direct and indirect. Some will provide desperately needed humanitarian assistance for the millions who have been displaced and victimized across the region. Others will help restore not just shattered economies but broken trust among neighbors.

"With the potential of further executions taking place," he said, "and because people are a minority huddled for safety on a mountain top, the United States has made its decision that it must save these lives.

"The world needs to join us in the condemnation of these actions," Mr Kerry added, speaking in the Afghan capital of Kabul.

US Secretary of State John Kerry has said all of the reports of fraud and irregularities in the second round of the Afghan presidential vote need to be resolved.

The election run-off between the leading contenders, Abdullah Abdullah and Ashraf Ghani, has been deadlocked since the June 14 vote, raising concerns in Washington about a smooth transition of power in Afghanistan just as US troops are withdrawing.